Device for supplying a cooling liquid to pistons of internal-combustion engines



C. KLOOS.

DEVICE FOR SUPPLYING AICOOLING LIQUID T0 PISTONS OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED IAN.29, 1919.

1,334,866. 4 Patented Mar. 1920.

2 SHEETSSHEET l.

i I I 6 fizz -67 7 K5005 c. KLOOS.

DEVICE FOR S-UPPLYING A COOLING LIQUID T0 PISTONS OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED IAN-29, I9I9- 1,334,866. Patented Mar. 23, 1920.

2 SHEETS-SHEET 2.

all

ti tl hurrah STATES PATENT ()FFICE.

CORNELIS KLOOS, 0F BUfiSUlVI, NETHERLANDS.

DEVICE FOR SUPPLYING A COOLING LIQUID T0 PISTONS 0F INTERNAL-COMBUSTION ENGINES.

Application filed January 29, 1919.

To all whom it may concern:

lie it known that I, OORNELIS Knees, engineer, subject of the Queen oi? the Netherlands, residing at Bussum, Netherlands, have invented certain new and useful improvements in Devices for Supplying a Cooling Liquid to Pistons ott Internal-Combustion Engines, of which the following is a specification.

The present invention relates to "a device for supplying a cooling liquid to the piston ot' an internal combustion engine.

it has been proposed to realize such supply, respectively the removal of the liquid from. the piston, by means of a pair of telescopic tubes one oi which is aliixed to the piston and executes a reciprocating motion within the second tube. l/Vith some of these known devices the supply of the liquid is realized under a certain pressure in which c: se a stuiling-box must be provided between both tubes, in other devices the liquid is in.- troduced in form of a jet into the piston and leaves the latter by the telescopic tubes.

According to the present invention the cooling liquid is supplied to the piston 8X- chisively by the dynamic energy of the latter and by means oi a pair of telescopic tubes ot special construction. In the stationary tube which has the largest diameter the liquid is kept at a constant level of such height that the second tube which is ailiXed to the piston dips into the liquid at each downward stroke. The characteristic feature of the device according to the invention is that the second tube has such a shape, respec tively is provided with such means that the liquid when penetrating into it is subject to a smaller resistance than at leaving the tube. lu consequence the reciprocating tube receives more liquid during its downward 1notion than it renders during its upward motion, the differential quantity being transmitted at each stroke to the piston.

Three tubes having the above mentioned effect are shown by the accompanying drawing. In all of the figures 1 is the hollow piston, 2 the dipping tube, 3 the stationary tube of larger diameter, into which the liq-- uid is supplied by the tube i, the level being kept constant by means of an overflow tube 5.

With the dipping tube 2 according to Figure 1 the different resistance in both senses 1S obtained by means of a mouth piece in the shape of a nozzle arranged at the lower end Specification of Letters Patent.

Patented Mar. 23, 1920.

Serial No. 273,857.

of the dipping tube and provided at its inner end with a sharp edge. When liquid is flowing downward through the tube said edge causes a contraction of the jet the quantity of liquid issuing per time unit being consequently smaller than the quantity of liquid flowing p er time unit through the mouth piece into the tube under equal circu1nstances.

According to Fig. 2 the dipping tube is provided at its inner surface with a number of oblique bafiie plates aiiiXed with one end to the tube and extending approximately to the axis of the latter.

Fig. 3 represents a dipping tube with a closed lower end above which a series of openings are provided. At the downward stroke of the piston the liquid penetrates into the tube through the openings at its lower end; at the upward stroke the greater part of this quantity of liquid is transmitted to the piston by inertia.

Having now described my invention I declare that what I claim is:

1. In a device for supplying a cooling liquid to a hollow piston of an internal combustion engine, the combination with a stationary tube having a water inlet at its lower end and an outlet at a determined point to maintain a water level in said tube, of a hollow. reciprocating piston, a tube mounted to re eiprocate with said piston in the stationary tube, the reciprocating tube having an open end discharging into said piston and the bottom of said tube being closed, and provided at a determined distance above the closed bottom with a series of openings, the space in the tube below the openings forming a pocket to receive water, whereby, when the tube is reciprocated, the water in the stationary tube will be caused to flow through the openings and accumulate in the pocket, and the water in the pocket will, by momentum in the reciprocation of the tube, be forced upwardlyand into the hollow piston.

22. In a device for supplying a cooling liquid to a hollow piston of an internal combustion engine, the combination with a stationary tube having a water inlet at its lower end and an outlet at a determined point to maintain a water level in said tube, of a hollow reciprocating piston, a tube mounted to reciprocate with said piston in the stationary tube, the reciprocating tube having an open end discharging into said piston and the bottom of said tube being closed and pointed, and provided at a determined distance above the pointed end with openings, the space in the pointed closed end of the tube below the openings forming a pocket to receive water, whereby, when the tube is reclprocated, the water 111 the stationary tube will be caused to flow through the openings and accumulate inthe pocket, and the wardly and into the hollow piston.-

In testimony whereof I aflix my signature.

CORNELIS KLOOS.

Vitnesses D. KLEiN, M. ALVARADO. 

